Is that confirmed?? Nothing on the OHL site (yet anyway). How many games? That play happened right in front of me, and I watched the replays after getting home.
Correct - hard hit. Nobody likes to see a player injured, but it happens in a contact sport. And I believe Watson was back out on the ice not long after.

Craig Ripley ‏@Craig_Ripley 3h
@OHLBarrieColts defenceman Ryan O'Connor will not play tonight. He is suspended, length has not been determined yet #Colts